Malicious PDF — malware analysis report

Static analysis result for SHA-256 ce9eed0383beb9b5…

MALICIOUS

PDF

60.3 KB Created: 2020-08-24 17:16:19 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7cd13a0ab4ef654e9b3f48147d1b515a SHA-1: fa96bc1a98148185a562fb6c80b528b865fff42d SHA-256: ce9eed0383beb9b5f7b329ca95d0a19411a4c52055ba7170c9e8dfd5187efcd3
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious Link

The PDF contains a large number of embedded links, many pointing to Shopify domains hosting other PDFs, which is indicative of a link farm or SEO poisoning attempt. One of these links, 'https://ttraff.ru/pify?keyword=witold+pilecki+report', is flagged as a malicious redirector. The document body, though heavily obfuscated, also contains this URL, suggesting the primary intent is to redirect the user to malicious infrastructure.

Heuristics 3

  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://ttraff.ru/pify?keyword=witold+pilecki+report
    • http://files.mycrownmusic.net/uploads/1/3/0/7/130740252/vivufewupimexides.pdf
    • http://files.bigapplecaroffice.com/uploads/1/3/0/8/130813818/fekumasipamiva.pdf
    • http://files.wrawpg.ca/uploads/1/3/0/7/130740257/1363419.pdf
    • https://cdn.shopify.com/s/files/1/0435/2750/4024/files/judik.pdf
    • https://cdn.shopify.com/s/files/1/0432/8649/5397/files/satupawoxaz.pdf
    • https://cdn.shopify.com/s/files/1/0429/5809/4495/files/43322398476.pdf
    • https://cdn.shopify.com/s/files/1/0436/1384/7710/files/nejata.pdf
    • https://cdn.shopify.com/s/files/1/0433/2371/9845/files/91135520716.pdf
    • https://cdn.shopify.com/s/files/1/0438/2821/5968/files/probability_mass_function_cdf.pdf
    • https://cdn.shopify.com/s/files/1/0434/4945/0661/files/gopubanetavedowizegojut.pdf
    • https://cdn.shopify.com/s/files/1/0431/6856/3355/files/72629638993.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000b225.bin
48d46b57b31579acdd5e8cd0a22900f0a8e46fd8f7a9a1b62ff57dcc19730124		 pdf-font-stream PDF embedded font (sfnt) at offset 0xB225 4756 bytes
font_01_sfnt_off0000c272.bin
68104624b2c7ff5ff7b2885c435fef78d51b35a89273ec06c9c1991877d24636		 pdf-font-stream PDF embedded font (sfnt) at offset 0xC272 9996 bytes

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